The all-new, four-episode, all-access series spotlights a host of intriguing storylines, with Floyd Mayweather, the sport’s most irrepressible superstar, returning after a year-and-a-half absence to face Juan Manuel Marquez, one of boxing’s most accomplished performers, as they prepare for their September pay-per-view showdown at the MGM Grand Garden Arena.

Noted Greenburg, “Now that the fight has been rescheduled, we are excited to resume production. This latest edition of ‘24/7’ features all the ingredients that we look for in greenlighting the ‘24/7’ franchise: big-time boxing stars, engaging storylines and in Floyd’s case, a larger-than-life personality that is tailor-made for reality television.”

Episodes two and three of MAYWEATHER/MARQUEZ 24/7 debut on subsequent Saturdays – SEPT. 5 (10:00-10:30 p.m.) and 12 (10:00-10:30 p.m.) – while the finale debuts FRIDAY, SEPT. 18 (9:30-10:00 p.m.), just one night before the fight. All four episodes will have multiple replay dates on HBO, and the series will also be available on HBO On Demand.

MAYWEATHER/MARQUEZ 24/7 will provide exclusive behind-the-scenes access, along with in-depth interviews, as these determined warriors prepare for their mega-fight. This is Mayweather’s third “24/7” appearance, while Marquez is making his HBO reality series debut. Regarded as the best boxer of his era, the undefeated Mayweather (39-0, 25 KOs) is back after a brief self-imposed retirement. A training camp injury forced the fight date to be reset to Sept. 19.

Marquez is a dynamic fighter (50-4-1, 37 KOs) from Mexico City who shares at least one thing with his flashy opponent: They’re both willing to fight anybody in the sport, regardless of division. Marquez is moving up from the lightweight ranks to challenge boxing’s most provocative star.

Storylines for this fast-paced series will include the interaction between Mayweather and his uncle/trainer, Roger Mayweather, and Marquez’s rock-solid relationship with his longtime trainer Ignacio Beristain.

MAYWEATHER/MARQUEZ 24/7 is the latest installment of the widely acclaimed “24/7” franchise that began in 2007 on HBO with “De La Hoya/Mayweather 24/7” and “Mayweather/Hatton 24/7.” The series continued in 2008 with “Calzaghe/Jones 24/7” and “De La Hoya/Pacquiao 24/7,” and resumed in 2009 with “Pacquiao/Hatton 24/7.”